Compile out splice support from nfsd when the splice-family of syscalls is not
supported by the system (i.e. CONFIG_SYSCALL_SPLICE is undefined).
Signed-off-by: Pieter Smith <[email protected]>
---
fs/nfsd/nfs4xdr.c | 4 ++++
fs/nfsd/vfs.c | 6 ++++++
2 files changed, 10 insertions(+)
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index f9821ce..c4ee0fd 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3060,6 +3060,7 @@ nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struc
return nfserr;
}
+#ifdef CONFIG_SYSCALL_SPLICE
static __be32 nfsd4_encode_splice_read(
struct nfsd4_compoundres *resp,
struct nfsd4_read *read,
@@ -3119,6 +3120,7 @@ static __be32 nfsd4_encode_splice_read(
return 0;
}
+#endif /* #ifdef CONFIG_SYSCALL_SPLICE */
static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp,
struct nfsd4_read *read,
@@ -3216,9 +3218,11 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
goto err_truncate;
}
+#ifdef CONFIG_SYSCALL_SPLICE
if (file->f_op->splice_read && resp->rqstp->rq_splice_ok)
err = nfsd4_encode_splice_read(resp, read, file, maxcount);
else
+#endif /* #ifdef CONFIG_SYSCALL_SPLICE */
err = nfsd4_encode_readv(resp, read, file, maxcount);
if (!read->rd_filp)
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index f501a9b..036db70 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -779,6 +779,7 @@ found:
return ra;
}
+#ifdef CONFIG_SYSCALL_SPLICE
/*
* Grab and keep cached pages associated with a file in the svc_rqst
* so that they can be passed to the network sendmsg/sendpage routines
@@ -818,6 +819,7 @@ static int nfsd_direct_splice_actor(struct pipe_inode_info *pipe,
{
return __splice_from_pipe(pipe, sd, nfsd_splice_actor);
}
+#endif /* #ifdef CONFIG_SYSCALL_SPLICE */
static __be32
nfsd_finish_read(struct file *file, unsigned long *count, int host_err)
@@ -831,6 +833,7 @@ nfsd_finish_read(struct file *file, unsigned long *count, int host_err)
return nfserrno(host_err);
}
+#ifdef CONFIG_SYSCALL_SPLICE
__be32 nfsd_splice_read(struct svc_rqst *rqstp,
struct file *file, loff_t offset, unsigned long *count)
{
@@ -846,6 +849,7 @@ __be32 nfsd_splice_read(struct svc_rqst *rqstp,
host_err = splice_direct_to_actor(file, &sd, nfsd_direct_splice_actor);
return nfsd_finish_read(file, count, host_err);
}
+#endif /* #ifdef CONFIG_SYSCALL_SPLICE */
__be32 nfsd_readv(struct file *file, loff_t offset, struct kvec *vec, int vlen,
unsigned long *count)
@@ -864,9 +868,11 @@ static __be32
nfsd_vfs_read(struct svc_rqst *rqstp, struct file *file,
loff_t offset, struct kvec *vec, int vlen, unsigned long *count)
{
+#ifdef CONFIG_SYSCALL_SPLICE
if (file->f_op->splice_read && rqstp->rq_splice_ok)
return nfsd_splice_read(rqstp, file, offset, count);
else
+#endif
return nfsd_readv(file, offset, vec, vlen, count);
}
--
1.9.1